[S390] zcrypt: fix ap_reset_domain()

Resetting of a all queues within a domain requires that a domain must
be selected first.

Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 90bd22014513..d334b0f7a1ec 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1231,8 +1231,9 @@ static void ap_reset_domain(void)
 {
         int i;
 
-        for (i = 0; i < AP_DEVICES; i++)
-                ap_reset_queue(AP_MKQID(i, ap_domain_index));
+        if (ap_domain_index != -1)
+                for (i = 0; i < AP_DEVICES; i++)
+                        ap_reset_queue(AP_MKQID(i, ap_domain_index));
 }
 
 static void ap_reset_all(void)